Catalyst tools are crafted from flexible silicone to allow artists a new form of expression. Designed for use with heavy-bodied oils and acrylics, Catalyst tools can even be used with encaustics, plaster, clay, and even frosting. Made of FDA-approved silicone, clean-up is a breeze being solvent resistant. Clean up in most cases can be done with mild soap and water. Dried paint can be peeled off the silicone surface. Catalyst™ blades can even be separated from their wood handles for cleaning and easily replaced when dry.